'footer', 'container' => 'nav', 'container_class' => 'usa-footer-nav', 'depth'=> 0, 'menu_class' => 'usa-unstyled-list', 'walker' => new BenjaminFooterNavbarWalker(), 'fallback_cb' => 'benjamin_set_default_menu' ); wp_nav_menu( $args ); ?>